On Apr 25, 2007, at 11:46 AM, Adrian Thompson wrote: > > Great! > > A quick question... What is the maximum size of a namespace? If I > have 4 x 4TB ZFS file systems and "bring them together" to a single > point with pNFS, is it going to stripe 16TB across the network to > one single 'virtual filesystem'?
Generally, yes. Specifically, it depends on the way the individual file layouts are constructed that determines how much of that storage is consumed by single files. In more detail, the idea of pNFS is as you suggest to collect a set of storage servers (meta-data and data servers (MDS and DS) in pNFS terms) such that they appear as a single NFS server. The underlying storage and how it is used or allocated is up to the meta-data server and the policies it has in allocation of the available storage. The specifics of how we will solve this for the OpenSolaris implementation have not been fully determined. We will start to have those discussions very soon such that we can deal with design issues of the underlying components. Spencer > > Thanks > -=//-\drian Thompson=- > > Lisa Week wrote: >> Hi, >> We would like to announce the availability of a screencast to >> highlight the capabilities of pNFS. >> >> It is located at: >> http://opensolaris.org/os/project/nfsv41/pnfsdemos >> >> --- >> A brief description of pNFS: pNFS (parallel NFS) is a distributed, >> parallel file system which provides a highly scalable data >> management solution through: >> >> 1) Parallel data transfers across many NFSv4.1 data servers >> 2) A single, unified namespace for all objects in the pNFS file >> system >> >> The pNFS protocol is being standardized in the NFS version 4 >> Working Group of the IETF and is part of the NFS version 4.1 >> specification effort. >> Thanks, The pNFS Team >> _______________________________________________ >> nfsv41-discuss mailing list >> nfsv41-discuss at opensolaris.org >> http://opensolaris.org/mailman/listinfo/nfsv41-discuss >> >> > _______________________________________________ > nfsv41-discuss mailing list > nfsv41-discuss at opensolaris.org > http://opensolaris.org/mailman/listinfo/nfsv41-discuss
